Observe the changes of the main symptoms, physical signs, pulmonary function, blood gas analysis, pe ripheral-blood EOS counting, T subpopulation quantity and the ECP of blood seru m .

• 观察治疗前后主要症状、体征、肺功能、血气分析、外周血嗜酸性粒细胞(EOS)计数、T亚群数量、血清嗜酸细胞阳离子蛋白(ECP)等的变化。